An activity being analyzed under PERT was judged to most likely have a duration of 40 days.When considering the time it would take to complete the activity if every relevant factor went well, it was estimated to be able to be doable in 20 days and even under the worst case imaginable, the task would be take 50 days.The estimates PERT duration of that activity is:
A) 36.67 days
B) 38.33 days
C) 37.50 days
D) 28.33 days
E) 32.67 days

Question

Quizplus · Accepted Answer

The PERT duration is calculated using the formula: $ \text{PERT Duration} = \frac{(O + 4M + P)}{6} $, where O = optimistic estimate, M = most likely estimate, and P = pessimistic estimate. Plugging in the values given (O = 20 days, M = 40 days, P = 50 days), we get $ \text{PERT Duration} = \frac{(20 + 4(40) + 50)}{6} = \frac{(20 + 160 + 50)}{6} = \frac{230}{6} = 38.33 $ days.

An Activity Being Analyzed Under PERT Was Judged to Most